Coating and sealing composition



l atented Sept. 8, 1931 PATENT GFFIfiE FREDERICK B'IAAS, OF NEVJ YGRK, N. Y.,

ASSIGNGR, BY MESNE ASSIGNMENTS, 10

WILLIAEI MANQ, 6F FLUSHENG, LGIUG ISLAND, NEW YORK COATIN 'G' AND SEALING COMPOSITION No Drawin a Application filed September 14, 1926, Serial No. 135,491. Renewed June 10, 1930.

This invention relates to a composition of matter suitable for use as a paint, a cement,

a pipe joint compound and for similar or analogous uses.

A paint or similar composition which can be economically manufactured and which is composed of cheap ingredients capable of withstanding the action of heat and of the atmosphere for indefinite periods has long 10 been sought. It is especially desirable that such a composition be carried by .an inexpensive vehicle and that it should dry rapidly.

It is further desirable that after drying it should be hard but comparatively elastic so as 18 not to crack under changes in temperature and that it be practically insoluble in and substantially unaffected by acids, gases and oils of various kinds.

No paint has heretofore been known which is resistant to and unaffected by that solution of acid, gas and oil which condenses from ordinary illuminating gas and which is commonly known in the art of gas manufacture as drip oil. Further, no paint has heretofore been known which prevents the deposit of naphthalene in, and the consequent clogging of, the gas conducting lines used in the manufacture of illuminating gas.

Serious trouble has also been encountered heretofore in the manufacture of illuminating gas by reason of the fac that the paint covering or protecting the pipe is attacked by the drip oil and dissolved. Furthermore, any of the materials heretofore used as a pipe joint compound for sealing the pipe joints are similarly attacked and tend to make the joints leak.

My improved composition, however, prevents incrustation of naphthalene, is unaifected by drip oil, and is an ideal pipe protector and pipe joint compound. It fulfills all of the requirements above set forth and has other desirable qualities as will be clear from the description which follows.

In place of the oil and oil colors which are at present customarily used in most-paints as solvents and coloring materials respective- 1y, I employ water as the vehicle in which the paint and colors are carried thereby attaining the advantages of economical manufacture, quick drying and economy of material, While at the same time avoiding the disadvantages of the previously known water paints which are affected by water.

In the manufacture of my improved com position, I prefer to make a solution of magnesium chloride which is thoroughly dissolved in water in the proportion of about 300 grains of magnesium chloride to about 300 grams of water, the chloride being stirred in the water to make sure that no undissolved particles remain. i also make a dry mixture of powdered magnesium oxide, powdered fiuorspar, powdered white dextrine and powdered aluminum oxide in the preferred proportions of about 300 grams of magnesi um oxide to grains of fluorspar, 50 grams dextrine and 50 gramsof aluminum oxide, though it will be understood that the proportions mentioned may be considerably varied without substantially affecting the properties of the composition. position is to be used as a paint or wood filler, and is therefore to be colored, dry colors, preferably in the form of what are known in the trade as earth colors or mineral colors, which are soluble in water, are added in sufficient quantities to give the desired shade.

The liquid solution of magnesium chloride is then added to the mixed powders to form a fluid or viscous paste. The ingredients are thoroughly stirred duri tion until all of the powder has been dissolved and the entire mixture has been uniformly colored and thoroughly mixed.

When the composition is to be used as a white paint or as a cement, no coloring matter is necessary unless the cement is visible in the finished object with which it is to be used, in which case coloring matter of the proper shades may be used in the same manner as above described in the production of the colored paint. To use my improved composition as a paint, it is applied with a brush or in the form of a spray in the usual manner. I find that it dries hard and practically unscratchable in about twelve hours, that after it has dried it will withstand intense heat without changing color or being other wise undesirably afiected and that it is prace' the mixing opera- When the comtically fireproof. My improved composition is also unaltected by water, moisture or prolonged exposure to the action of the atmosphere. Most weal: acids, salts and gases do not allect it in any way nor is it atlected by salt water nor even a strong solution oi lye. When the composition to be used as a pipe joint compound, it is placed aroundthe pipe threads in the usual manner, and when hardened not only strengthens the joint but prevents leakage.

I have found that the dextrine in inv improved composition acts as a binder for the ingredients, and gives the composition ellicient adhesive properties. While the magnesium chloride and magnesium oxide in commercial form often contain calciun salt impurities which tend to absorb moisture, l have found that the aluminum oxide coats the magnesium. salts and protects them against the access of moisture. i'luorspar fills up the voids in the compesitirm in somewhat the same manner as the sand in concrete lills up the voids therein and hardens the dried composition. The tluorspar also protects against the action of tie carbonic acid gas in tne atmosphere while the magnesium chloride and magnesium oxiue form the lJHlk OfE the composition. Earth colors are used for the reason that they are not only soluble in water but that they are permanent and ta L and when used in my composition, are not likely to fade or to be otherwise atlected by the prolonged action of sunlight, moisture and most of the common acids, salts and gases in the strength in which they are usually encountered in use. My nnpr' Vtll composition is also unail'ected by drip oil, and absorbs naphthalene as has been above pointed out,

and renders pipe joints leak-proof.

and firmly to glass,

It adheres readily I ials so that it wood, metals and othe in is also ctiicient a cement tor joining parts together, and particularly tor a pipe joint compound in gas and oil lines. it will e understood that the quantities and propertions of the ingredients above specified may be considerably varied without materially aliecting the properties of the composition.

it will be seen 'l urther that I have provided a composition which can be economically and easily manutactured in large quantities, which lire and water proof and unaffected by most of the common paint destructive agencies so that it may last nractically indefinitely, and which has a varie of other uses which will be obvious to one skilled in the art and need not therefore be here set :torth in detail.

I claim:

1. A plastic coating and sealing composb tion, water proof and tire proof when dry and substantially unaffected by common weak acids, salts, oils and gases and particularly drip oil, and particularly adapted for use as a pipe oint compound, comprising aluminum oxide, magnesium chloride, magnesium oxide, dextrine, fluorspar and water.

2. In a plastic coating and sealing composition capable of drying in about twelve hours, a water vehicle, magnesium chloride, magnesium oxide, aluminum oxide tor mixing and coating said oxide and chloride for preventing the absorption of moisture thereby, adextrine binder and powdered fluorspar for partly filling the voids tormed on the drying of said composition.

3. A plastic coating and sealing composition resistant to drip oil, comprising a solution of magnesium chloride in water to which has been added a substantially equal amount of a mixture of magnesium oxide, dextrine, lluorspar and aluminum oxide.

l. A plastic coating and sealing composition drying in about twelve hours comprising a solution of about equal parts o't powdered magnesium chloride and water, to which has been added a substantially equal amount of a substantially dry mixture or" about six parts magnesium oxide, one part tluorspar, one part dextrine and about one part aluminum oxide.

5. A plastic coating and sealing composition impervious to drip oil and capable of preventing incrustation deposit of naphthalene in pipe lines for illuminating gas consisting of equal parts magnesium chloride, and magnesium oxide, with about 10% aluminum oxide, and fluorspar.

6. A plastic coating and sealing composition comprising equal parts by weight of magnesium chloride, magnesium oxide and water in the greater proportion and about equal parts by weight of fluorspar, dextrine an d aluminum oxide in the lesser proportion.

7. A plastic pipe joint compound includin a water vehicle, magnesium oxide, magnesiui'n chloride, and not more than 10% of aluminum oxide to protect the magnesium salts against the access of moisture.

8. A plastic pipe joint compound adapted to seal pipe joints against leakage and resistant to drip oil, comprising a water solunesium chloride, and magnesium oxide, an niert silicious filler and a powdered .ii oral for coating the magnesium salts and preventin the absorption ot moisture thereby.

FREDERICK MAAS. 

